Genetic correlation between Prothrombin G20210A polymorphism and retinal vein occlusion risk

The aim of this study was to perform an updated meta-analysis to quantitatively investigate the association between G20210A polymorphism of Prothrombin gene and the risk of retinal vein occlusion (RVO), based on the available publications with inconsistent results. We utilized the Stata software to perform the heterogeneity test, association test, Begg's and Egger's tests, and sensitivity analysis. We searched three on-line databases (PubMed, Embase, and WOS) and obtained a total of 422 articles. Based on our selection criteria, 24 case-control studies were finally enrolled in this overall meta-analysis; a subgroup analysis by the factors ethnicity, control source, and RVO type was done. Through the association test of overall meta-analysis, we did not observe a significant difference between RVO cases and controls under the A vs G (allele) (z=1.49, P=0.137), A vs G (carrier) (z=1.42, P =0.155), GA vs GG (z=1.50, P=0.135), and GA+AA vs GG (z=1.50, P=0.135). Furthermore, we observed similar negative results in the association test of subgroup analysis (all P>0.05). Heterogeneity, Begg's, and Egger's tests excluded the presence of high heterogeneity and publication bias. Statistically stable results were observed in the sensitivity analyses. Based on integrated analysis of the current evidence, Prothrombin gene G20210A polymorphism is likely unrelated to the risk of RVO.

Characteristic of endoscopic submucosal dissection in elderly patients aged more than or equal to 80 years / 中国内镜杂志

Objective To analyze the characteristic of endoscopic submucosal dissection (ESD) in elderly patients aged more than or equal to 80 years. Methods We retrospectively reviewed 41 patients aged more than or equal to 80 years with 47 lesions treated by ESD from September 2010 to January 2017. The diseased region, pathology and complications were evaluated. Results Of the 47 lesions, there have 3 esophageal lesions, 21 gastric lesions, 10 colonic lesions and 13 rectal lesions. For the pathology, there have 34 early cancer or precancerous lesion, 2 GIST, 1 neuroendocrine tumor and 10 other types of pathology. 1 cardia1 early cancer underwent additional laparoscopic lymphadenectomy. There have 7 complications, 4 post-ESD bleeding, 2 delirium and 1 pneumonia. Conclusion ESD for colorectal lesion is more frequently in elderly patients aged more than or equal to 80 years. Post-ESD bleeding is the main complication.